linux-kernel - [PATCH v4] arm64: dts: ti: k3-j721s2: Add support for ADC nodes

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Date:   Mon, 13 Mar 2023 16:58:34 +0530
From:   Bhavya Kapoor <b-kapoor@...com>
To:     <devicetree@...r.kernel.org>, <robh+dt@...nel.org>
CC:     <nm@...com>, <vigneshr@...com>, <kristo@...nel.org>,
        <krzysztof.kozlowski+dt@...aro.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>
Subject: [PATCH v4] arm64: dts: ti: k3-j721s2: Add support for ADC nodes

J721s2 has two instances of 8 channel ADCs in MCU domain. Add DT nodes
for both instances of 8 channel ADCs for J721s2 SoC.

Signed-off-by: Bhavya Kapoor <b-kapoor@...com>
---

Changelog v3->v4:
- add leading zeroes to reg address to match existing convention
- change clock names for adc to 'fck'
- remove spaces from start of line

 .../dts/ti/k3-j721s2-common-proc-board.dts    | 14 +++++++
 .../boot/dts/ti/k3-j721s2-mcu-wakeup.dtsi     | 40 +++++++++++++++++++
 2 files changed, 54 insertions(+)

diff --git a/arch/arm64/boot/dts/ti/k3-j721s2-common-proc-board.dts b/arch/arm64/boot/dts/ti/k3-j721s2-common-proc-board.dts
index a7aa6cf08acd..3bc4f28c809f 100644
--- a/arch/arm64/boot/dts/ti/k3-j721s2-common-proc-board.dts
+++ b/arch/arm64/boot/dts/ti/k3-j721s2-common-proc-board.dts
@@ -309,3 +309,17 @@ &mcu_mcan1 {
 	pinctrl-0 = <&mcu_mcan1_pins_default>;
 	phys = <&transceiver2>;
 };
+
+&tscadc0 {
+	status = "okay";
+	adc {
+		ti,adc-channels = <0 1 2 3 4 5 6 7>;
+	};
+};
+
+&tscadc1 {
+	status = "okay";
+	adc {
+		ti,adc-channels = <0 1 2 3 4 5 6 7>;
+	};
+};
diff --git a/arch/arm64/boot/dts/ti/k3-j721s2-mcu-wakeup.dtsi b/arch/arm64/boot/dts/ti/k3-j721s2-mcu-wakeup.dtsi
index 0af242aa9816..5da5f0cf7009 100644
--- a/arch/arm64/boot/dts/ti/k3-j721s2-mcu-wakeup.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-j721s2-mcu-wakeup.dtsi
@@ -306,4 +306,44 @@ cpts@...00 {
 			ti,cpts-periodic-outputs = <2>;
 		};
 	};
+
+	tscadc0: tscadc@...00000 {
+		compatible = "ti,am3359-tscadc";
+		reg = <0x00 0x40200000 0x00 0x1000>;
+		interrupts = <GIC_SPI 860 IRQ_TYPE_LEVEL_HIGH>;
+		power-domains = <&k3_pds 0 TI_SCI_PD_EXCLUSIVE>;
+		clocks = <&k3_clks 0 0>;
+		assigned-clocks = <&k3_clks 0 2>;
+		assigned-clock-rates = <60000000>;
+		clock-names = "fck";
+		dmas = <&main_udmap 0x7400>,
+			<&main_udmap 0x7401>;
+		dma-names = "fifo0", "fifo1";
+		status = "disabled";
+
+		adc {
+			#io-channel-cells = <1>;
+			compatible = "ti,am3359-adc";
+		};
+	};
+
+	tscadc1: tscadc@...10000 {
+		compatible = "ti,am3359-tscadc";
+		reg = <0x00 0x40210000 0x00 0x1000>;
+		interrupts = <GIC_SPI 861 IRQ_TYPE_LEVEL_HIGH>;
+		power-domains = <&k3_pds 1 TI_SCI_PD_EXCLUSIVE>;
+		clocks = <&k3_clks 1 0>;
+		assigned-clocks = <&k3_clks 1 2>;
+		assigned-clock-rates = <60000000>;
+		clock-names = "fck";
+		dmas = <&main_udmap 0x7402>,
+			<&main_udmap 0x7403>;
+		dma-names = "fifo0", "fifo1";
+		status = "disabled";
+
+		adc {
+			#io-channel-cells = <1>;
+			compatible = "ti,am3359-adc";
+		};
+	};
 };
-- 
2.34.1